
/**
 * \file xf86drm.h 
 * OS-independent header for DRM user-level library interface.
 *
 * \author Rickard E. (Rik) Faith <faith@valinux.com>
 */

/*
 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */

#ifndef _XF86DRM_H_
#define _XF86DRM_H_

#include <stdarg.h>
#include <sys/types.h>
#include <stdint.h>
#include <drm.h>

#ifndef DRM_MAX_MINOR
#define DRM_MAX_MINOR   16
#endif

#if defined(__linux__)

#define DRM_IOCTL_NR(n)		_IOC_NR(n)
#define DRM_IOC_VOID		_IOC_NONE
#define DRM_IOC_READ		_IOC_READ
#define DRM_IOC_WRITE		_IOC_WRITE
#define DRM_IOC_READWRITE	_IOC_READ|_IOC_WRITE
#define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)

#else							/* One of the *BSDs */

#include <sys/ioccom.h>
#define DRM_IOCTL_NR(n)         ((n) & 0xff)
#define DRM_IOC_VOID            IOC_VOID
#define DRM_IOC_READ            IOC_OUT
#define DRM_IOC_WRITE           IOC_IN
#define DRM_IOC_READWRITE       IOC_INOUT
#define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)

#endif

				/* Defaults, if nothing set in xf86config */
#define DRM_DEV_UID	 0
#define DRM_DEV_GID	 0

/* Default /dev/dri directory permissions 0755 */
#define DRM_DEV_DIRMODE	 	\
	(S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
#define DRM_DEV_MODE	 (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)

#define DRM_DIR_NAME  "/dev/dri"
#define DRM_DEV_NAME  "%s/card%d"
#define DRM_CONTROL_DEV_NAME  "%s/controlD%d"
#define DRM_PROC_NAME "/proc/dri/"	/* For backward Linux compatibility */

#define DRM_ERR_NO_DEVICE  (-1001)
#define DRM_ERR_NO_ACCESS  (-1002)
#define DRM_ERR_NOT_ROOT   (-1003)
#define DRM_ERR_INVALID    (-1004)
#define DRM_ERR_NO_FD      (-1005)

#define DRM_AGP_NO_HANDLE 0

typedef unsigned int drmSize, *drmSizePtr;		/**< For mapped regions */

typedef void *drmAddress, **drmAddressPtr;		/**< For mapped regions */

typedef struct _drmServerInfo
{
	int (*debug_print) (const char *format, va_list ap);
	int (*load_module) (const char *name);
	void (*get_perms) (gid_t *, mode_t *);
} drmServerInfo, *drmServerInfoPtr;

typedef struct drmHashEntry
{
	int fd;
	void (*f) (int, void *, void *);
	void *tagTable;
} drmHashEntry;

extern int drmIoctl(int fd, unsigned long request, void *arg);

extern void *drmGetHashTable(void);

extern drmHashEntry *drmGetEntry(int fd);

/**
 * Driver version information.
 *
 * \sa drmGetVersion() and drmSetVersion().
 */
typedef struct _drmVersion
{

	int version_major;		  /**< Major version */

	int version_minor;		  /**< Minor version */

	int version_patchlevel;	  /**< Patch level */

	int name_len;		  /**< Length of name buffer */

	char *name;			  /**< Name of driver */

	int date_len;		  /**< Length of date buffer */

	char *date;			  /**< User-space buffer to hold date */

	int desc_len;		  /**< Length of desc buffer */

	char *desc;			  /**< User-space buffer to hold desc */
} drmVersion, *drmVersionPtr;

typedef struct _drmStats
{

	unsigned long count;		 /**< Number of data */
	struct
	{

		unsigned long value;	 /**< Value from kernel */

		const char *long_format; /**< Suggested format for long_name */

		const char *long_name;	 /**< Long name for value */

		const char *rate_format; /**< Suggested format for rate_name */

		const char *rate_name;	 /**< Short name for value per second */

		int isvalue;		 /**< True if value (vs. counter) */

		const char *mult_names;	 /**< Multiplier names (e.g., "KGM") */

		int mult;		 /**< Multiplier value (e.g., 1024) */

		int verbose;		 /**< Suggest only in verbose output */
	} data[15];
} drmStatsT;

				/* All of these enums *MUST* match with the
				   kernel implementation -- so do *NOT*
				   change them!  (The drmlib implementation
				   will just copy the flags instead of
				   translating them.) */
typedef enum
{

	DRM_FRAME_BUFFER = 0,	  /**< WC, no caching, no core dump */

	DRM_REGISTERS = 1,		  /**< no caching, no core dump */

	DRM_SHM = 2,		  /**< shared, cached */

	DRM_AGP = 3,		  /**< AGP/GART */

	DRM_SCATTER_GATHER = 4,	  /**< PCI scatter/gather */

	DRM_CONSISTENT = 5		  /**< PCI consistent */
} drmMapType;

typedef enum
{

	DRM_RESTRICTED = 0x0001,	  /**< Cannot be mapped to client-virtual */

	DRM_READ_ONLY = 0x0002,	  /**< Read-only in client-virtual */

	DRM_LOCKED = 0x0004,	  /**< Physical pages locked */

	DRM_KERNEL = 0x0008,	  /**< Kernel requires access */

	DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */

	DRM_CONTAINS_LOCK = 0x0020,	  /**< SHM page that contains lock */

	DRM_REMOVABLE = 0x0040	  /**< Removable mapping */
} drmMapFlags;

/**
 * \warning These values *MUST* match drm.h
 */
typedef enum
{

	/** \name Flags for DMA buffer dispatch */
	/*@{ */

	DRM_DMA_BLOCK = 0x01,	 /**< 
				  * Block until buffer dispatched.
				  * 
				  * \note the buffer may not yet have been
				  * processed by the hardware -- getting a
				  * hardware lock with the hardware quiescent
				  * will ensure that the buffer has been
				  * processed.
				  */

	DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */

	DRM_DMA_PRIORITY = 0x04,	 /**< High priority dispatch */
	/*@} */

	/** \name Flags for DMA buffer request */
	/*@{ */

	DRM_DMA_WAIT = 0x10,	 /**< Wait for free buffers */

	DRM_DMA_SMALLER_OK = 0x20,	 /**< Smaller-than-requested buffers OK */

	DRM_DMA_LARGER_OK = 0x40	 /**< Larger-than-requested buffers OK */
		/*@} */
} drmDMAFlags;

typedef enum
{
	DRM_PAGE_ALIGN = 0x01,
	DRM_AGP_BUFFER = 0x02,
	DRM_SG_BUFFER = 0x04,
	DRM_FB_BUFFER = 0x08,
	DRM_PCI_BUFFER_RO = 0x10
} drmBufDescFlags;

typedef enum
{

	DRM_LOCK_READY = 0x01,	/**< Wait until hardware is ready for DMA */

	DRM_LOCK_QUIESCENT = 0x02,	/**< Wait until hardware quiescent */

	DRM_LOCK_FLUSH = 0x04,	/**< Flush this context's DMA queue first */

	DRM_LOCK_FLUSH_ALL = 0x08,	/**< Flush all DMA queues first */
	/* These *HALT* flags aren't supported yet
	   -- they will be used to support the
	   full-screen DGA-like mode. */

	DRM_HALT_ALL_QUEUES = 0x10,	/**< Halt all current and future queues */

	DRM_HALT_CUR_QUEUES = 0x20	/**< Halt all current queues */
} drmLockFlags;

typedef enum
{

	DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
				     never swapped. */

	DRM_CONTEXT_2DONLY = 0x02	  /**< This context is for 2D rendering only. */
} drm_context_tFlags, *drm_context_tFlagsPtr;

typedef struct _drmBufDesc
{

	int count;			  /**< Number of buffers of this size */

	int size;			  /**< Size in bytes */

	int low_mark;		  /**< Low water mark */

	int high_mark;		  /**< High water mark */
} drmBufDesc, *drmBufDescPtr;

typedef struct _drmBufInfo
{

	int count;			  /**< Number of buffers described in list */

	drmBufDescPtr list;		  /**< List of buffer descriptions */
} drmBufInfo, *drmBufInfoPtr;

typedef struct _drmBuf
{

	int idx;			  /**< Index into the master buffer list */

	int total;			  /**< Buffer size */

	int used;			  /**< Amount of buffer in use (for DMA) */

	drmAddress address;		  /**< Address */
} drmBuf, *drmBufPtr;

/**
 * Buffer mapping information.
 *
 * Used by drmMapBufs() and drmUnmapBufs() to store information about the
 * mapped buffers.
 */
typedef struct _drmBufMap
{

	int count;			  /**< Number of buffers mapped */

	drmBufPtr list;		  /**< Buffers */
} drmBufMap, *drmBufMapPtr;

typedef struct _drmLock
{
	volatile unsigned int lock;
	char padding[60];
	/* This is big enough for most current (and future?) architectures:
	   DEC Alpha:              32 bytes
	   Intel Merced:           ?
	   Intel P5/PPro/PII/PIII: 32 bytes
	   Intel StrongARM:        32 bytes
	   Intel i386/i486:        16 bytes
	   MIPS:                   32 bytes (?)
	   Motorola 68k:           16 bytes
	   Motorola PowerPC:       32 bytes
	   Sun SPARC:              32 bytes
	 */
} drmLock, *drmLockPtr;

/**
 * Indices here refer to the offset into
 * list in drmBufInfo
 */
typedef struct _drmDMAReq
{

	drm_context_t context;	  /**< Context handle */

	int send_count;		  /**< Number of buffers to send */

	int *send_list;		  /**< List of handles to buffers */

	int *send_sizes;		  /**< Lengths of data to send, in bytes */

	drmDMAFlags flags;		  /**< Flags */

	int request_count;		  /**< Number of buffers requested */

	int request_size;		  /**< Desired size of buffers requested */

	int *request_list;		  /**< Buffer information */

	int *request_sizes;		  /**< Minimum acceptable sizes */

	int granted_count;		  /**< Number of buffers granted at this size */
} drmDMAReq, *drmDMAReqPtr;

typedef struct _drmRegion
{
	drm_handle_t handle;
	unsigned int offset;
	drmSize size;
	drmAddress map;
} drmRegion, *drmRegionPtr;

typedef struct _drmTextureRegion
{
	unsigned char next;
	unsigned char prev;
	unsigned char in_use;

	unsigned char padding;	/**< Explicitly pad this out */
	unsigned int age;
} drmTextureRegion, *drmTextureRegionPtr;

typedef enum
{

	DRM_VBLANK_ABSOLUTE = 0x0,	/**< Wait for specific vblank sequence number */

	DRM_VBLANK_RELATIVE = 0x1,	/**< Wait for given number of vblanks */
	/* bits 1-6 are reserved for high crtcs */
	DRM_VBLANK_HIGH_CRTC_MASK = 0x0000003e,

	DRM_VBLANK_EVENT = 0x4000000,	/**< Send event instead of blocking */

	DRM_VBLANK_FLIP = 0x8000000,	/**< Scheduled buffer swap should flip */

	DRM_VBLANK_NEXTONMISS = 0x10000000,	/**< If missed, wait for next vblank */

	DRM_VBLANK_SECONDARY = 0x20000000,	/**< Secondary display controller */
	DRM_VBLANK_SIGNAL = 0x40000000	/* Send signal instead of blocking */
} drmVBlankSeqType;

#define DRM_VBLANK_HIGH_CRTC_SHIFT 1

typedef struct _drmVBlankReq
{
	drmVBlankSeqType type;
	unsigned int sequence;
	unsigned long signal;
} drmVBlankReq, *drmVBlankReqPtr;

typedef struct _drmVBlankReply
{
	drmVBlankSeqType type;
	unsigned int sequence;
	long tval_sec;
	long tval_usec;
} drmVBlankReply, *drmVBlankReplyPtr;

typedef union _drmVBlank
{
	drmVBlankReq request;
	drmVBlankReply reply;
} drmVBlank, *drmVBlankPtr;

typedef struct _drmSetVersion
{
	int drm_di_major;
	int drm_di_minor;
	int drm_dd_major;
	int drm_dd_minor;
} drmSetVersion, *drmSetVersionPtr;

#define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)

#define DRM_LOCK_HELD  0x80000000U /**< Hardware lock is held */

#define DRM_LOCK_CONT  0x40000000U /**< Hardware lock is contended */

#if defined(__GNUC__) && (__GNUC__ >= 2)
# if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
				/* Reflect changes here to drmP.h */
#define DRM_CAS(lock,old,new,__ret)                                    \
	do {                                                           \
                int __dummy;	/* Can't mark eax as clobbered */      \
		__asm__ __volatile__(                                  \
			"lock ; cmpxchg %4,%1\n\t"                     \
                        "setnz %0"                                     \
			: "=d" (__ret),                                \
   			  "=m" (__drm_dummy_lock(lock)),               \
                          "=a" (__dummy)                               \
			: "2" (old),                                   \
			  "r" (new));                                  \
	} while (0)

#elif defined(__alpha__)

#define	DRM_CAS(lock, old, new, ret)		\
	do {					\
		int tmp, old32;			\
		__asm__ __volatile__(		\
		"	addl	$31, %5, %3\n"	\
		"1:	ldl_l	%0, %2\n"	\
		"	cmpeq	%0, %3, %1\n"	\
		"	beq	%1, 2f\n"	\
		"	mov	%4, %0\n"	\
		"	stl_c	%0, %2\n"	\
		"	beq	%0, 3f\n"	\
		"	mb\n"			\
		"2:	cmpeq	%1, 0, %1\n"	\
		".subsection 2\n"		\
		"3:	br	1b\n"		\
		".previous"			\
		: "=&r"(tmp), "=&r"(ret),	\
		  "=m"(__drm_dummy_lock(lock)),	\
		  "=&r"(old32)			\
		: "r"(new), "r"(old)		\
		: "memory");			\
	} while (0)

#elif defined(__sparc__)

#define DRM_CAS(lock,old,new,__ret)				\
do {	register unsigned int __old __asm("o0");		\
	register unsigned int __new __asm("o1");		\
	register volatile unsigned int *__lock __asm("o2");	\
	__old = old;						\
	__new = new;						\
	__lock = (volatile unsigned int *)lock;			\
	__asm__ __volatile__(					\
		/*"cas [%2], %3, %0"*/				\
		".word 0xd3e29008\n\t"				\
		/*"membar #StoreStore | #StoreLoad"*/		\
		".word 0x8143e00a"				\
		: "=&r" (__new)					\
		: "0" (__new),					\
		  "r" (__lock),					\
		  "r" (__old)					\
		: "memory");					\
	__ret = (__new != __old);				\
} while(0)

#elif defined(__ia64__)

#ifdef __INTEL_COMPILER

/* this currently generates bad code (missing stop bits)... */
#include <ia64intrin.h>

#define DRM_CAS(lock,old,new,__ret)					      \
	do {								      \
		unsigned long __result, __old = (old) & 0xffffffff;		\
		__mf();							      	\
		__result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
		__ret = (__result) != (__old);					\
/*		__ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
						     (old), (new))	      \
			 != (old));					      */\
	} while (0)

#else
#define DRM_CAS(lock,old,new,__ret)					  \
	do {								  \
		unsigned int __result, __old = (old);			  \
		__asm__ __volatile__(					  \
			"mf\n"						  \
			"mov ar.ccv=%2\n"				  \
			";;\n"						  \
			"cmpxchg4.acq %0=%1,%3,ar.ccv"			  \
			: "=r" (__result), "=m" (__drm_dummy_lock(lock))  \
			: "r" ((unsigned long)__old), "r" (new)			  \
			: "memory");					  \
		__ret = (__result) != (__old);				  \
	} while (0)

#endif

#elif defined(__powerpc__)

#define DRM_CAS(lock,old,new,__ret)			\
	do {						\
		__asm__ __volatile__(			\
			"sync;"				\
			"0:    lwarx %0,0,%1;"		\
			"      xor. %0,%3,%0;"		\
			"      bne 1f;"			\
			"      stwcx. %2,0,%1;"		\
			"      bne- 0b;"		\
			"1:    "			\
			"sync;"				\
		: "=&r"(__ret)				\
		: "r"(lock), "r"(new), "r"(old)		\
		: "cr0", "memory");			\
	} while (0)

#endif							/* architecture */
#endif							/* __GNUC__ >= 2 */

#ifndef DRM_CAS
#define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0)	/* FAST LOCK FAILS */
#endif

#if defined(__alpha__)
#define DRM_CAS_RESULT(_result)		long _result
#elif defined(__powerpc__)
#define DRM_CAS_RESULT(_result)		int _result
#else
#define DRM_CAS_RESULT(_result)		char _result
#endif

#define DRM_LIGHT_LOCK(fd,lock,context)                                \
	do {                                                           \
                DRM_CAS_RESULT(__ret);                                 \
		DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
                if (__ret) drmGetLock(fd,context,0);                   \
        } while(0)

				/* This one counts fast locks -- for
				   benchmarking only. */
#define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count)                    \
	do {                                                           \
                DRM_CAS_RESULT(__ret);                                 \
		DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
                if (__ret) drmGetLock(fd,context,0);                   \
                else       ++count;                                    \
        } while(0)

#define DRM_LOCK(fd,lock,context,flags)                                \
	do {                                                           \
		if (flags) drmGetLock(fd,context,flags);               \
		else       DRM_LIGHT_LOCK(fd,lock,context);            \
	} while(0)

#define DRM_UNLOCK(fd,lock,context)                                    \
	do {                                                           \
                DRM_CAS_RESULT(__ret);                                 \
		DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret);     \
                if (__ret) drmUnlock(fd,context);                      \
        } while(0)

				/* Simple spin locks */
#define DRM_SPINLOCK(spin,val)                                         \
	do {                                                           \
            DRM_CAS_RESULT(__ret);                                     \
	    do {                                                       \
		DRM_CAS(spin,0,val,__ret);                             \
		if (__ret) while ((spin)->lock);                       \
	    } while (__ret);                                           \
	} while(0)

#define DRM_SPINLOCK_TAKE(spin,val)                                    \
	do {                                                           \
            DRM_CAS_RESULT(__ret);                                     \
            int  cur;                                                  \
	    do {                                                       \
                cur = (*spin).lock;                                    \
		DRM_CAS(spin,cur,val,__ret);                           \
	    } while (__ret);                                           \
	} while(0)

#define DRM_SPINLOCK_COUNT(spin,val,count,__ret)                       \
	do {                                                           \
            int  __i;                                                  \
            __ret = 1;                                                 \
            for (__i = 0; __ret && __i < count; __i++) {               \
		DRM_CAS(spin,0,val,__ret);                             \
		if (__ret) for (;__i < count && (spin)->lock; __i++);  \
	    }                                                          \
	} while(0)

#define DRM_SPINUNLOCK(spin,val)                                       \
	do {                                                           \
            DRM_CAS_RESULT(__ret);                                     \
            if ((*spin).lock == val) { /* else server stole lock */    \
	        do {                                                   \
		    DRM_CAS(spin,val,0,__ret);                         \
	        } while (__ret);                                       \
            }                                                          \
	} while(0)

/* General user-level programmer's API: unprivileged */
extern int drmAvailable(void);

extern int drmOpen(const char *name, const char *busid);

extern int drmOpenControl(int minor);

extern int drmClose(int fd);

extern drmVersionPtr drmGetVersion(int fd);

extern drmVersionPtr drmGetLibVersion(int fd);

extern int drmGetCap(int fd, uint64_t capability, uint64_t * value);

extern void drmFreeVersion(drmVersionPtr);

extern int drmGetMagic(int fd, drm_magic_t * magic);

extern char *drmGetBusid(int fd);

extern int drmGetInterruptFromBusID(int fd, int busnum, int devnum, int funcnum);

extern int drmGetMap(int fd, int idx, drm_handle_t * offset,
					 drmSize * size, drmMapType * type,
					 drmMapFlags * flags, drm_handle_t * handle, int *mtrr);
extern int drmGetClient(int fd, int idx, int *auth, int *pid,
						int *uid, unsigned long *magic, unsigned long *iocs);
extern int drmGetStats(int fd, drmStatsT * stats);

extern int drmSetInterfaceVersion(int fd, drmSetVersion * version);

extern int drmCommandNone(int fd, unsigned long drmCommandIndex);

extern int drmCommandRead(int fd, unsigned long drmCommandIndex, void *data, unsigned long size);

extern int drmCommandWrite(int fd, unsigned long drmCommandIndex, void *data, unsigned long size);

extern int drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
							   void *data, unsigned long size);

/* General user-level programmer's API: X server (root) only  */
extern void drmFreeBusid(const char *busid);

extern int drmSetBusid(int fd, const char *busid);

extern int drmAuthMagic(int fd, drm_magic_t magic);

extern int drmAddMap(int fd,
					 drm_handle_t offset,
					 drmSize size, drmMapType type, drmMapFlags flags, drm_handle_t * handle);
extern int drmRmMap(int fd, drm_handle_t handle);

extern int drmAddContextPrivateMapping(int fd, drm_context_t ctx_id, drm_handle_t handle);

extern int drmAddBufs(int fd, int count, int size, drmBufDescFlags flags, int agp_offset);

extern int drmMarkBufs(int fd, double low, double high);

extern int drmCreateContext(int fd, drm_context_t * handle);

extern int drmSetContextFlags(int fd, drm_context_t context, drm_context_tFlags flags);

extern int drmGetContextFlags(int fd, drm_context_t context, drm_context_tFlagsPtr flags);

extern int drmAddContextTag(int fd, drm_context_t context, void *tag);

extern int drmDelContextTag(int fd, drm_context_t context);

extern void *drmGetContextTag(int fd, drm_context_t context);

extern drm_context_t *drmGetReservedContextList(int fd, int *count);

extern void drmFreeReservedContextList(drm_context_t *);

extern int drmSwitchToContext(int fd, drm_context_t context);

extern int drmDestroyContext(int fd, drm_context_t handle);

extern int drmCreateDrawable(int fd, drm_drawable_t * handle);

extern int drmDestroyDrawable(int fd, drm_drawable_t handle);

extern int drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
								 drm_drawable_info_type_t type, unsigned int num, void *data);
extern int drmCtlInstHandler(int fd, int irq);

extern int drmCtlUninstHandler(int fd);

/* General user-level programmer's API: authenticated client and/or X */
extern int drmMap(int fd, drm_handle_t handle, drmSize size, drmAddressPtr address);

extern int drmUnmap(drmAddress address, drmSize size);

extern drmBufInfoPtr drmGetBufInfo(int fd);

extern drmBufMapPtr drmMapBufs(int fd);

extern int drmUnmapBufs(drmBufMapPtr bufs);

extern int drmDMA(int fd, drmDMAReqPtr request);

extern int drmFreeBufs(int fd, int count, int *list);

extern int drmGetLock(int fd, drm_context_t context, drmLockFlags flags);

extern int drmUnlock(int fd, drm_context_t context);

extern int drmFinish(int fd, int context, drmLockFlags flags);

extern int drmGetContextPrivateMapping(int fd, drm_context_t ctx_id, drm_handle_t * handle);

/* AGP/GART support: X server (root) only */
extern int drmAgpAcquire(int fd);

extern int drmAgpRelease(int fd);

extern int drmAgpEnable(int fd, unsigned long mode);

extern int drmAgpAlloc(int fd, unsigned long size,
					   unsigned long type, unsigned long *address, drm_handle_t * handle);
extern int drmAgpFree(int fd, drm_handle_t handle);

extern int drmAgpBind(int fd, drm_handle_t handle, unsigned long offset);

extern int drmAgpUnbind(int fd, drm_handle_t handle);

/* AGP/GART info: authenticated client and/or X */
extern int drmAgpVersionMajor(int fd);

extern int drmAgpVersionMinor(int fd);

extern unsigned long drmAgpGetMode(int fd);

extern unsigned long drmAgpBase(int fd);	/* Physical location */

extern unsigned long drmAgpSize(int fd);	/* Bytes */

extern unsigned long drmAgpMemoryUsed(int fd);

extern unsigned long drmAgpMemoryAvail(int fd);

extern unsigned int drmAgpVendorId(int fd);

extern unsigned int drmAgpDeviceId(int fd);

/* PCI scatter/gather support: X server (root) only */
extern int drmScatterGatherAlloc(int fd, unsigned long size, drm_handle_t * handle);

extern int drmScatterGatherFree(int fd, drm_handle_t handle);

extern int drmWaitVBlank(int fd, drmVBlankPtr vbl);

/* Support routines */
extern void drmSetServerInfo(drmServerInfoPtr info);

extern int drmError(int err, const char *label);

extern void *drmMalloc(int size);

extern void drmFree(void *pt);

/* Hash table routines */
extern void *drmHashCreate(void);

extern int drmHashDestroy(void *t);

extern int drmHashLookup(void *t, unsigned long key, void **value);

extern int drmHashInsert(void *t, unsigned long key, void *value);

extern int drmHashDelete(void *t, unsigned long key);

extern int drmHashFirst(void *t, unsigned long *key, void **value);

extern int drmHashNext(void *t, unsigned long *key, void **value);

/* PRNG routines */
extern void *drmRandomCreate(unsigned long seed);

extern int drmRandomDestroy(void *state);

extern unsigned long drmRandom(void *state);

extern double drmRandomDouble(void *state);

/* Skip list routines */

extern void *drmSLCreate(void);

extern int drmSLDestroy(void *l);

extern int drmSLLookup(void *l, unsigned long key, void **value);

extern int drmSLInsert(void *l, unsigned long key, void *value);

extern int drmSLDelete(void *l, unsigned long key);

extern int drmSLNext(void *l, unsigned long *key, void **value);

extern int drmSLFirst(void *l, unsigned long *key, void **value);

extern void drmSLDump(void *l);

extern int drmSLLookupNeighbors(void *l, unsigned long key,
								unsigned long *prev_key, void **prev_value,
								unsigned long *next_key, void **next_value);

extern int drmOpenOnce(void *unused, const char *BusID, int *newlyopened);

extern void drmCloseOnce(int fd);

extern void drmMsg(const char *format, ...);

extern int drmSetMaster(int fd);

extern int drmDropMaster(int fd);

#define DRM_EVENT_CONTEXT_VERSION 2

typedef struct _drmEventContext
{

	/* This struct is versioned so we can add more pointers if we
	 * add more events. */
	int version;

	void (*vblank_handler) (int fd,
							unsigned int sequence,
							unsigned int tv_sec, unsigned int tv_usec, void *user_data);

	void (*page_flip_handler) (int fd,
							   unsigned int sequence,
							   unsigned int tv_sec, unsigned int tv_usec, void *user_data);

} drmEventContext, *drmEventContextPtr;

extern int drmHandleEvent(int fd, drmEventContextPtr evctx);

extern char *drmGetDeviceNameFromFd(int fd);

#endif
